diff options
Diffstat (limited to 'sys/alpha/tc/if_le_ioasic.c')
-rw-r--r-- | sys/alpha/tc/if_le_ioasic.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/sys/alpha/tc/if_le_ioasic.c b/sys/alpha/tc/if_le_ioasic.c deleted file mode 100644 index 0e7ed07..0000000 --- a/sys/alpha/tc/if_le_ioasic.c +++ /dev/null @@ -1,400 +0,0 @@ -/* $FreeBSD$ */ -/* $NetBSD: if_le_ioasic.c,v 1.10 1998/01/19 02:49:48 thorpej Exp $ */ - -/* - * Copyright (c) 1996 Carnegie-Mellon University. - * All rights reserved. - * - * Author: Chris G. Demetriou - * - * Permission to use, copy, modify and distribute this software and - * its documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND - * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie the - * rights to redistribute these changes. - */ - -/* - * LANCE on DEC IOCTL ASIC. - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/bus.h> -#include <sys/mbuf.h> -#include <sys/syslog.h> -#include <sys/socket.h> - -#include <net/if.h> -#include <net/netisr.h> - -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/in_var.h> -#include <netinet/ip.h> -#include <netinet/if_ether.h> -#include <net/if_media.h> - -#ifdef INET -#include <netinet/in.h> -#include <netinet/if_inarp.h> -#endif - -#include <alpha/tc/am7990reg.h> -#include <alpha/tc/am7990var.h> - -#include <alpha/tc/if_levar.h> -#include <alpha/tc/tcreg.h> -#include <alpha/tc/tcvar.h> -#include <alpha/tc/ioasicvar.h> - -extern caddr_t le_iomem; - -static int le_ioasic_probe(device_t dev); -static int le_ioasic_attach(device_t dev); -static device_method_t le_ioasic_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, le_ioasic_probe), - DEVMETHOD(device_attach, le_ioasic_attach), - {0, 0} -}; -#define LE_IOASIC_SOFTC(dev) (struct le_softc*) device_get_softc(dev) -static driver_t le_ioasic_driver = { - "le", - le_ioasic_methods, - sizeof(struct le_softc), -}; - -static devclass_t le_ioasic_devclass; - -hide void le_ioasic_copytobuf_gap2(struct am7990_softc *, void *, - int, int); -hide void le_ioasic_copyfrombuf_gap2(struct am7990_softc *, void *, - int, int); - -hide void le_ioasic_copytobuf_gap16(struct am7990_softc *, void *, - int, int); -hide void le_ioasic_copyfrombuf_gap16(struct am7990_softc *, void *, - int, int); -hide void le_ioasic_zerobuf_gap16(struct am7990_softc *, int, int); - - -static int -le_ioasic_probe(device_t dev) -{ - if(strcmp(device_get_name(device_get_parent(dev)),"ioasic")){ - return ENXIO; - } else { - return(0); - } - -} - -static int -le_ioasic_attach(device_t dev) -{ - register struct le_softc *lesc = LE_IOASIC_SOFTC(dev); - register struct am7990_softc *sc = &lesc->sc_am7990; - struct ioasic_dev *d = device_get_ivars(dev); - lesc->sc_r1 = (struct lereg1 *) - TC_DENSE_TO_SPARSE(TC_PHYS_TO_UNCACHED(d->iada_addr)); - sc->sc_mem = (void *)TC_PHYS_TO_UNCACHED(le_iomem); - sc->sc_copytodesc = le_ioasic_copytobuf_gap2; - sc->sc_copyfromdesc = le_ioasic_copyfrombuf_gap2; - sc->sc_copytobuf = le_ioasic_copytobuf_gap16; - sc->sc_copyfrombuf = le_ioasic_copyfrombuf_gap16; - sc->sc_zerobuf = le_ioasic_zerobuf_gap16; - - if (le_iomem == 0) { - printf("%s: DMA area not set up\n", - device_get_nameunit(sc->sc_dev)); - return ENXIO; - } - - sc->sc_dev = dev; - sc->unit = device_get_unit(dev); - - dec_le_common_attach(sc, ioasic_lance_ether_address()); - - ioasic_intr_establish(device_get_parent(dev), d->iad_cookie, 0, am7990_intr, sc); - return(0); -} - -/* - * Special memory access functions needed by ioasic-attached LANCE - * chips. - */ - -/* - * gap2: two bytes of data followed by two bytes of pad. - * - * Buffers must be 4-byte aligned. The code doesn't worry about - * doing an extra byte. - */ - -void -le_ioasic_copytobuf_gap2(sc, fromv, boff, len) - struct am7990_softc *sc; - void *fromv; - int boff; - register int len; -{ - volatile caddr_t buf = sc->sc_mem; - register caddr_t from = fromv; - register volatile u_int16_t *bptr; - - if (boff & 0x1) { - /* handle unaligned first byte */ - bptr = ((volatile u_int16_t *)buf) + (boff - 1); - *bptr = (*from++ << 8) | (*bptr & 0xff); - bptr += 2; - len--; - } else - bptr = ((volatile u_int16_t *)buf) + boff; - while (len > 1) { - *bptr = (from[1] << 8) | (from[0] & 0xff); - bptr += 2; - from += 2; - len -= 2; - } - if (len == 1) - *bptr = (u_int16_t)*from; -} - -void -le_ioasic_copyfrombuf_gap2(sc, tov, boff, len) - struct am7990_softc *sc; - void *tov; - int boff, len; -{ - volatile caddr_t buf = sc->sc_mem; - register caddr_t to = tov; - register volatile u_int16_t *bptr; - register u_int16_t tmp; - - if (boff & 0x1) { - /* handle unaligned first byte */ - bptr = ((volatile u_int16_t *)buf) + (boff - 1); - *to++ = (*bptr >> 8) & 0xff; - bptr += 2; - len--; - } else - bptr = ((volatile u_int16_t *)buf) + boff; - while (len > 1) { - tmp = *bptr; - *to++ = tmp & 0xff; - *to++ = (tmp >> 8) & 0xff; - bptr += 2; - len -= 2; - } - if (len == 1) - *to = *bptr & 0xff; -} - -/* - * gap16: 16 bytes of data followed by 16 bytes of pad. - * - * Buffers must be 32-byte aligned. - */ - -void -le_ioasic_copytobuf_gap16(sc, fromv, boff, len) - struct am7990_softc *sc; - void *fromv; - int boff; - register int len; -{ - volatile caddr_t buf = sc->sc_mem; - register caddr_t from = fromv; - register caddr_t bptr; - - bptr = buf + ((boff << 1) & ~0x1f); - boff &= 0xf; - - /* - * Dispose of boff so destination of subsequent copies is - * 16-byte aligned. - */ - if (boff) { - register int xfer; - xfer = min(len, 16 - boff); - bcopy(from, bptr + boff, xfer); - from += xfer; - bptr += 32; - len -= xfer; - } - - /* Destination of copies is now 16-byte aligned. */ - if (len >= 16) - switch ((u_long)from & (sizeof(u_int32_t) -1)) { - case 2: - /* Ethernet headers make this the dominant case. */ - do { - register u_int32_t *dst = (u_int32_t*)bptr; - register u_int16_t t0; - register u_int32_t t1, t2, t3, t4; - - /* read from odd-16-bit-aligned, cached src */ - t0 = *(u_int16_t*)from; - t1 = *(u_int32_t*)(from+2); - t2 = *(u_int32_t*)(from+6); - t3 = *(u_int32_t*)(from+10); - t4 = *(u_int16_t*)(from+14); - - /* DMA buffer is uncached on mips */ - dst[0] = t0 | (t1 << 16); - dst[1] = (t1 >> 16) | (t2 << 16); - dst[2] = (t2 >> 16) | (t3 << 16); - dst[3] = (t3 >> 16) | (t4 << 16); - - from += 16; - bptr += 32; - len -= 16; - } while (len >= 16); - break; - - case 0: - do { - register u_int32_t *src = (u_int32_t*)from; - register u_int32_t *dst = (u_int32_t*)bptr; - register u_int32_t t0, t1, t2, t3; - - t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3]; - dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3; - - from += 16; - bptr += 32; - len -= 16; - } while (len >= 16); - break; - - default: - /* Does odd-aligned case ever happen? */ - do { - bcopy(from, bptr, 16); - from += 16; - bptr += 32; - len -= 16; - } while (len >= 16); - break; - } - if (len) - bcopy(from, bptr, len); -} - -void -le_ioasic_copyfrombuf_gap16(sc, tov, boff, len) - struct am7990_softc *sc; - void *tov; - int boff, len; -{ - volatile caddr_t buf = sc->sc_mem; - register caddr_t to = tov; - register caddr_t bptr; - - bptr = buf + ((boff << 1) & ~0x1f); - boff &= 0xf; - - /* Dispose of boff. source of copy is subsequently 16-byte aligned. */ - if (boff) { - register int xfer; - xfer = min(len, 16 - boff); - bcopy(bptr+boff, to, xfer); - to += xfer; - bptr += 32; - len -= xfer; - } - if (len >= 16) - switch ((u_long)to & (sizeof(u_int32_t) -1)) { - case 2: - /* - * to is aligned to an odd 16-bit boundary. Ethernet headers - * make this the dominant case (98% or more). - */ - do { - register u_int32_t *src = (u_int32_t*)bptr; - register u_int32_t t0, t1, t2, t3; - - /* read from uncached aligned DMA buf */ - t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3]; - - /* write to odd-16-bit-word aligned dst */ - *(u_int16_t *) (to+0) = (u_short) t0; - *(u_int32_t *) (to+2) = (t0 >> 16) | (t1 << 16); - *(u_int32_t *) (to+6) = (t1 >> 16) | (t2 << 16); - *(u_int32_t *) (to+10) = (t2 >> 16) | (t3 << 16); - *(u_int16_t *) (to+14) = (t3 >> 16); - bptr += 32; - to += 16; - len -= 16; - } while (len > 16); - break; - case 0: - /* 32-bit aligned aligned copy. Rare. */ - do { - register u_int32_t *src = (u_int32_t*)bptr; - register u_int32_t *dst = (u_int32_t*)to; - register u_int32_t t0, t1, t2, t3; - - t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3]; - dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3; - to += 16; - bptr += 32; - len -= 16; - } while (len > 16); - break; - - /* XXX Does odd-byte-aligned case ever happen? */ - default: - do { - bcopy(bptr, to, 16); - to += 16; - bptr += 32; - len -= 16; - } while (len > 16); - break; - } - if (len) - bcopy(bptr, to, len); -} - -void -le_ioasic_zerobuf_gap16(sc, boff, len) - struct am7990_softc *sc; - int boff, len; -{ - volatile caddr_t buf = sc->sc_mem; - register caddr_t bptr; - register int xfer; - - bptr = buf + ((boff << 1) & ~0x1f); - boff &= 0xf; - xfer = min(len, 16 - boff); - while (len > 0) { - bzero(bptr + boff, xfer); - bptr += 32; - boff = 0; - len -= xfer; - xfer = min(len, 16); - } -} - - - -DRIVER_MODULE(le_ioasic, ioasic, le_ioasic_driver, le_ioasic_devclass, 0, 0); |